Add keys support to MultiSearch
Use camelCase for $currentSearch var
Merge pull request #375 from damienalexandre/msearch-index

Add named key support to MultiSearch
Update attachment mapper install command
Update IndexTest to be compatible with 0.90.*
added an interface that entities can implement
Merge pull request #376 from lsmith77/document_object_interface

[WIP] added an interface that entities can implement
added changelog entry
fixed minor error
Merge pull request #381 from lsmith77/document_object_interface

Document object interface
removed print_r in IndexTest.php and fixes spacing issue
remove the document-object-interface in favor of http://www.elasticsearch.org/guide/reference/mapping/id-field/
Merge pull request #386 from lsmith77/remove-document-object-interface

remove the document-object-interface
Elastica\Index::exists fixed for 0.90.0. HEAD request method introduced
Update to ES 0.90.0 for travis
Elastica\Filter\AbstractMulti::getFilters() added
Verify with test that Elastica\Index::count($query) works as expected
Implement Elastica\Type\Mapping::enableAllField
Refresh for Elastica\Index::flush implemented #316
logging requests #385 PSR-3